Quantitative Aptitude - Arithmetic Ability Questions

A regular square pyramid has side of its base 20 cm and height 45 cm is melted and recast into regular triangular pyramids of equilateral base of side 10 cm and height 10√3 cm. What are the total numbers of regular triangular pyramid?

Rahul can complete a work in 18 days and Sonu can complete the same work in 15 days. If both together work for 5 days, then what part of total work is left?

A Lawn roller makes 20 revolutions in one hour. The radius it runs through 25 minutes is

The height of a tower is 50√3 m. The angle of elevation of a tower from a distance 50 m from its feet is

How many 3 ­digit numbers are completely divided by 4.

If 5x - (1/2)(2x -7) = 5.5, then what is the value of x?

If 3cos2x - 2sin2x = -0.75 and 0°⩽ x ⩽ 90°, then x = ?

The angle of elevation of a ladder leaning against a wall is 60 deg and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is